infernal regions

Pluton'ic, relating to the interior of the earth, or to the Plutonic theory in geology of the formation of certain rocks by fire: from "Pluto"—in classic mythology, the god of the infernal regions.

We came upon a street that was a scene out of the infernal regions, each house afire, a lane where demonic citizens might walk, capes black, bonnets bulging, baskets filled with mewling roots.

A century’s worth of dead managers are chuckling in the infernal regions.

Stalin was an Earthling; Hitler climbed up from the infernal regions.

Early American settlers thought the salamander looked like “a creature from hell where it's bent on returning” or a reminder of the “horrible tortures of the infernal regions.”